Hey all. I am having some kind of valve train noise issues. I recently stroked my 302 to a 331 with AFR 185 heads, steel crank, H beam rods, SRP pistons, Edelbrock RPM Air gap intake, comp cams full roller 1.6 rockers, and long tube Hooker Headers. The first time, i had a comp cams 274 hydraulic flat tappet cam shaft, but i had a lobe go flat not long after i got it running. So i had to pull it back apart to get all the metal out. I didnt want that to happen again, so i had comp cams grind a custom roller cam shaft and got a set of roller lifters. They are the retro fit lifters with the link bar setup. After i got the engine broke in, the engine developed what sounds like a lifter noise, the classic ticking sound. so i re-adjusted them according to comp cams paper that came with the cam shaft which called for 1/2 a turn of pre-load. so i did so, and it still had the noise. I called comp and they said only go 1/16 to 1/8 a turn of pre-load. i did so...still has the noise. i even tried to adjust them with it running and it just changed the rpm range of the noise. Anyone have any ideas....
thanks
thanks